11257129 has 4 divisors (see below), whose sum is σ = 12123076. Its totient is φ = 10391184.

The previous prime is 11257109. The next prime is 11257151. The reversal of 11257129 is 92175211.

11257129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3705625 + 7551504 = 1925^2 + 2748^2 .

It is a cyclic number.

It is not a de Polignac number, because 11257129 - 2¹¹ = 11255081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11257097 and 11257106.

It is not an unprimeable number, because it can be changed into a prime (11257109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432954 + ... + 432979.

It is an arithmetic number, because the mean of its divisors is an integer number (3030769).

Almost surely, 2^11257129 is an apocalyptic number.

It is an amenable number.

11257129 is a deficient number, since it is larger than the sum of its proper divisors (865947).

11257129 is an equidigital number, since it uses as much as digits as its factorization.

11257129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865946.

The product of its digits is 1260, while the sum is 28.

The square root of 11257129 is about 3355.1645265173. The cubic root of 11257129 is about 224.1175576071.

It can be divided in two parts, 1125712 and 9, that added together give a square (1125721 = 1061²).

The spelling of 11257129 in words is "eleven million, two hundred fifty-seven thousand, one hundred twenty-nine".